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대한흉부영상의학회 Weekly Case 검색
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Weekly Chest CasesImaging Conference Cases

Case No : 1

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  • Age/Sex 33 / F
  • Case Title Right knee pain for 7-8 months & right leg deformity
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Diagnosis With Brief Discussion

Courtesy
Kangnam St. Mary's Hospital, TheCatholic University
Imaging Findings
- Plain : multiple, well-defined, lobulated, medullary osteolytic tumor with/without calcification in cartilaginous matrix
- MR : low SI on T1WI, high SI on T2WI

Malignant Transformation (5 to 30%)

- Most frequently, chondrosarcoma

- Less frequently, dedifferentiated chondrosarcoma,

osteosarcoma or chondroid chordoma



- Imaging Findings

1. More than 8 cm

2. Pain, soft tissue mass

3. Disappearance of pre-existing calcification

4. ? Radiolucent area

5. Pathologic fracture

Discussion
Clinical Findings
- Usually appears in the first decade of life

- Palpable bony mass

- Asymmetric shortening of the extremities

- Osseous deformity related to fracture

Clinical Course of Enchondroma

- Disappear during growth and displaced by normal bone

- Do not increase unless malignant transformation,

after cessation of growth


Involving sites

- Most frequently, long tubular bone (tibia, femur, fibula)

- Less frequently, metacarpal,metatarsal bone

- Flat bone : pelvis, rib



Complications

- In childhood : pathologic fracture

- In adult : malignant transformation

- Most frequently in femur

Reference
Clinical Findings
- Usually appears in the first decade of life

- Palpable bony mass

- Asymmetric shortening of the extremities

- Osseous deformity related to fracture

Clinical Course of Enchondroma

- Disappear during growth and displaced by normal bone

- Do not increase unless malignant transformation, after cessation of growth


Involving sites

- Most frequently, long tubular bone (tibia, femur, fibula)

- Less frequently, metacarpal,metatarsal bone

- Flat bone : pelvis, rib



Complications

- In childhood : pathologic fracture

- In adult : malignant transformation

- Most frequently in femur

Keywords
Rib, Benign tumor,
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Each Case of This Site Supplied by the Members of KSTR.
Copyright of the Images is in the KSTR and Original Supplier.
Current Editor : Sung Shine Shim, MD, PhD. Email : sinisim@ewha.ac.kr

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